The 101 Association, Inc.
For the preservation and enjoyment of 1928 to 1931 Indian Scout Motocycles
"You can't wear out an Indian Scout"

Oil leaking from generator gear pulley

  • 09 Jul 2019 11:11 PM
    Message # 7771662

    Hi 101 members, just finished my 1928 101 and I have noticed that when driving at 45-55 mph oil is getting pushed out of the generator gear, and is getting on the battery box and surrounding area. 

    I talked to Kent Thompson and he said there was a service shot of that issue and a repair recommendation. If any one is looking for parts, or advice, Kent Thompson has been a great resource. 

    If anyone has that service shot if they could email it to me I would greatly appreciate it.

    Here is a photo of my 101. Im also looking for a 1931 project if anyone knows of one. Thanks, Wayne

    1 file
    Last modified: 09 Jul 2019 11:14 PM | Anonymous
  • 11 Jul 2019 3:16 PM
    Reply # 7775724 on 7771662

    Basically in the service shot is described there is a oil supply hole drilled for the bushing at the top in the gear housing. That hole is plugged and a oil draining hole is drilled at the underside of the bushing instead. Check out and scroll down

    And please support him hosting this valuable info.

  • 12 Jul 2019 7:55 AM
    Reply # 7776423 on 7771662
    Tim Raindle (Administrator)

    Hopefully that link will help cure your problem, Wayne.That usually works better than installing a seal, which is irreversable, and wil blow anyway when bearing gets worn.

    Also a possibility that the crankcase pressure is affecting primary and tranny. Is your timing case breather working well? 


  • 28 Jul 2019 10:24 AM
    Reply # 7800228 on 7771662

    I disassembled my generator drive adapter and  mine was the later 4 bolt type. What I found is that the bushing has a drain hole that did not line up with the drain hole in the casting. Once that bushing was removed and re aligned that cured the piling issue I had. Thanks 

  • 29 Jul 2019 12:03 PM
    Reply # 7801418 on 7771662
    Tim Raindle (Administrator)

    Good to know, thanks Wayne.

    Got any pics of it misaligned we can use for the club magazine ?


  • 05 Aug 2019 7:29 AM
    Reply # 7812289 on 7771662

    That’s a fine restoration ...a real credit to you.  Well done !

  • 23 Jun 2021 10:56 PM
    Reply # 10692111 on 7771662

    Quick question. I am new to the forum and have only had my 101 for a few months.  I recently rode mine for a 60 mile return journey and although the bike ran well it leaked a lot of oil from the generator drive wheel area. I would like to take it out but do not know if there is a 'trick' to getting the pulley and pedestal off. There are the four bolts that hold it on and I removed them but it doesn't budge even when tapped with a rubber mallet. Can someone confirm for me that there is no hidden fasteners internal I need to remove or if I am just dealing with a very stuck part that needs more aggressive tapping?


    1 file
  • 27 Jun 2021 9:44 PM
    Reply # 10705962 on 7771662

    Hi Andrew, nothing inside is holding it, it's only a gear in the genny drive meshing with the gear on the clutch hub, so maybe the gasket has hardened!

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